2LM

2^2554+1 M

Open composite · C329 · component M

NFS Planning

GNFS Murphy estimate: 1.85e-22
SNFS Murphy score: 3.84e-18
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 8
SNFS skew: 1.37863

Identifiers

Target expression: 2^1277+1+2^639
Target value: 2601983048666099770481310081841021384653815561816676201329778087600902014918340074503059860433081046210605403488570251947845891562080866227034976651419330190731032377347305086443295837415395889899460163948020062123509222137032782163354878970389530362529346170965373811473297399213469559852256097293884487258970710895137490944393607998513899368326606843431383905311155219076021915484161
Target link: FactorDB page
Target ID: 1100000000000641039
Target changed: -
Parent query: 2^2554+1
Parent ID: -
Cofactor token: C329
Imported: Jun 03, 2026, 04:30 PM UTC

Raw pmain126 Factorization

858916543349369.31028012425558037.1227156720026097481648213. C329

SNFS Polynomial

Polynomial

Degree: 8
Murphy: 3.84e-18
Skew: 1.37863
Selected: Best

n: 79560867271817576243246191881856663508059786541614722047639658145630670584907289427865926096825372376593457393207345754463877516060134388528826391253960673210708332356359614563853265992971762173241849461909147948591201889904880150876837567790526767344559040096488975428267931222598621569965597992407430904600860057598740547431249
# 2^2554+1 Aurifeuillian M, difficulty: 385.32, skewness: 1.30
# cost: 6.83624e+22, est. time: 32553503.70 GHz days (not accurate yet!)
# Optimized skew: 1.37863 Murphy: 3.84e-18
skew: 1.37863
c8: 1
c4: 4
c0: 8
Y1: -1
Y0: 1461501637330902918203684832716283019655932542976
type: snfs